Yao Liu

[multistage] [debugability] Support explain distributed stage plan and add a test for explicit distinct

1

Extend the current explain query visitor to explain distributed stage plan. Add a test for explicit distinct query.

[multi-stage] Query timeout overwrite

2

Currently, the query option time doesn't overwrite correctly. We should have: user-config override should always be considered as the total time (maybe minus planning time, i will explain later) with...

The join table order has to be in the order of table size. i.e. table from the right hand side has to be smaller. @walterddr FYI.

[Feature] Support function registry with arg types

2

1) Functions are registered using FunctionName and DataType (converted from Java type) 2) To make this fully work, we have to support all literal passing from SqlNode to Thrift so...

[Feature] Support boolean literals equals and notEquals

2

Support boolean literal evaluation, eg. true = true, (true = true) != false 1) Save literal value as an object 2) Register scalar function with func names and argument types....